Question

vii) Which indicator will
produce a pink colour on
adding a few drops of sodium
hydroxide solution? *
Oblue litmus
Ophenolphthalein
O turmeric
Ochina rose indicator​

Answer 1

Answer:

In alkaline solution, phenolphthalein gives pink color as it works as an indicator which shows its endpoint when it reacts with hydroxide ions of the base. It is a commonly used indicator in acid-base titrations. In acidic solution when acid is added, phenolphthalein gives a colorless solution.

phenolphthalein is correct ans

Answer 2

Answer:

it's PHENOLPTHALEIN . it turns green when it comes in contact with bases ( in this case the base is sodium hydroxide solution) and colourless when comes in contact with acids . it's an acid-base pH indicator !!

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